Nginx 1.18.0 官方更新日志:
http://nginx.org/en/CHANGES-1.18
nginx-1.18.0 stable version has been released, incorporating new features and bug fixes from the 1.17.x mainline branch - including the dry run mode in limit_req and limit_conn, variables support in the limit_rate, limit_rate_after, and grpc_pass directives, the auth_delay directive, and more.